Molder&#39;s flask



Apu-i123, 1929. G. L. SMITH, y 1,710,325

^ MoLDERs FLAsK Filed may 25'. mv

4 ATTORNEYS Patented Apr. 23 1929.

Giionen L. sMI'r'H, or nrcnivroN or RICHMOND, 1N

Application mea nay Y25,

res PATENT orifice..l

D, INDIANA, AssrGNon r.ro swAYNnnoBrNscN e ce.,

DIANA, A conronA'rioN or INDIANA.

' MoLDn-Rs rLAsK;

My invention relates to improvements in molders iiasks and is particularly directed towards that ty from the sand mo termed.

lt is Aone oiE the objects oiE my provide a mold iiask which speedy and accurat the molder, and par the iiask from the sand. a

Another object oig my invention is to provide an improved cope of the readily manipulat Another object vide improved. means 4relative to the drag d the saine.

@ther objectsV and a more fully in the appen claims.

In the embodiment o trated in the Fig. 1 is a of a flask embodying my inv flask form of sand plate which'may be easily and ed by vthe operat-or.

of my invention is to proor guiding the cope uring the separation of pe of liask which is removed ld after the same has been invention to will permit of e handling on the part of ticularly when removing for the dvantages will appear ded specification and t myV invention illus accompanying drawings,

side elevation, partly in section,

Fig. 2 is an lend elevation in section;

Fig. 3 is a ticularly the Fig. 4 is a partial sec 1, l ot Fig.- 2;

r 13 ig. o is apar cope and showing more particularly means 11er the sand rims;

Fig. 6 is a detail section showing the mounting of the sand rims, and k transverse section of a modified Fig. 7 is a form of guide pin.

ln the embodiinen oii t-he usual taper typ 1 and cope 2.

is provided secured to the streng the exterior o'li the drag.

drag is a gu suitable configuration structures shown in Fi gs. 1 to 5 angular' shape.

its lower end (i arranged to be bolted t same bolts which secure the tion. These low the top e in its over-a a handle 2 ide pin 5 which and rlhis pin 5 ention thereof, partly detail section showing morepan match-plate guide; tional view on the line tial horizontal sectional view the operating t illustrated the flask is e and comprises the drag [At each end of the drag there bolted or otherwise thening ribs 4 formed on Also secured to the may be of any is illustrated in the as being ot triis providedy at with laterally extendingtlanges flanges, it will dge of the drag a ll length extend o the ribs l by the handle 3 in posibe noted, lie belthough the pin s Jfrom a point 1927. Serial N0. 193,998.

near the bottom of the drag to a point approximately at the top of the cope.4

n In some instances it is desirable to surround the bottom portion 01 the mold wit-h a band and to this end tor supporting this surrounding band 7 in position during the ramniing ot' the sand in the drag, l provide inwardly extending fingers 8 on the top ed ge of the drag, which lingers project inwardly be? yond the inner face oi' the drag. These lingers are preferably counter-sunk below the top edge of the drag so that the edge oi! the drag will present a straight surface and in use, when the drag is turned rip-side down for the purpose oit ramming the same, provide supports for the band 7 during the ramming opern ation. i. liter the sand has been rammed the sand itseli will support the band when it is turned right side up.

The cope 2 is provided at its bottom edge with an annular over-hanging skirt 9, the bottom edge of which rests upon the top edge of the drag and the lower portion ot this shirt extends slightly below the sides 10 oi Jthe cope to provide a clearance between the lower edges of the sides and the top edge oic the drag. Inthis clearance is arranged a sand rim formed in iour sections.

12. Each oi2 the sections comprises an angle member, the vertical portion 1310i which eX- The sections are biased inwardly by means oli coiled springs 17 surrounding vthe pivot pins and having one end' bearing on the top flange et the cope and the opposite end bear' ing on the ear. The two side sections are provided with rounded cornersand their inner edges are provided with diagonally extending cam sui-'faces' 18 adapted to overlap similar cam surfaces on the two end sections. The two .end sections are provided with operating handles 2O by means ot which the sections may rocked on their pivots and when so rocked outwardly the came surfaces 19, engaging the camsur'liacesl, will also roel; the side sections outwardlyso that the sand rim will be withdrawn to permit the cope to be raised clear of the mold.

i rl`his rim is formed oi two side sections 11 and two end sections 'wardly from the match rllie operating handles 20 for the sand rini lie below the handles 2l secured on theiends ot the cope and these handles 2l have boltec thereto if shaped guides adapted to eooperate with the pins 5 Y it is being raised 'from the drag. llilhese guides entend downwardly :troni the handles 2l and are provided with bolting i'langes 24 by which they may be secured to the handles 2l. By extending the guides downwardly to a point in line with the bottom edge of the cope, the guides engage the pins until the bottoni edge ot the cope clears the top oli the pins so that a proper guidance of the cope is insured during its lifting n'ioveinent.

in seine ii'istances it desirable to use a match plate in connection with the l'lasli and under such circumstances the match plate is provided at ends with guides bolted thereto and entend ing downwardly therelfroin. rlliese guides engage the guide pins 5 in a manner similar to that ot the guides "Q3, But it will be noted that duc to the i'iact that the lower end of the pin entends downwardly so far that with the guide Zo extending do\.\f'n plate, there is ample clearance to accommodate 'the guide ln Fig. il have illustrated a niodilied forni oit guide pin. ln this ligure provide a base plate 2i" adapted to be bolted to the ribs l in the manner similar to that ol" the ears (5, and this base plate is provided with a hall' round recess 28 adapted to receive a round guide pin 2). This pin is provided with a bolt hole 30 counter-sunk on both sides of the pin, and the pin is secured in position by means of a suitable bolt or bolts passii'ig thcrethrorp l; the heads fitting into the counterssunl; openings so as to leave the face ol the pin clear. liv/hen one side of the pin becomes worn is obvious that the pin may be removed and reversed.

lin operation, a'tter the cope has been placed upon the d rag and cope, the cope may be li'led 'from the drag, with the sand therein held iroin dropping out b'/ Vthe sand rim, which is urged in its pro- 'Aill-er the pattern has been removed troni the drag, or the match plate removed. l'roni position, the cope may be placed back on the d and the opera or li lit the lenti re [lash from the mold by grasping the handles 2l. and l between the thumb and lirst two lingers liei'ieath the handle 3 and inanipulatiiig the handle 2O to retract the sand rin'i and then lifting the entire structure clear olf the inold.

ln view ot the liact that the lingers Spiro# ject beyond the inner lface 'of the drag, as the drag is litted from the sand, these lingers would scrape across the edge ol the inold and tor guiding the copey the sand rannirefil in the i )ected position. by the coiled springs l?.-

tend to break it up. I therefore provide on the inner face of the cope immediately above the lingers 8, pattern ribs 3l, which leave channels in the side of the sand to acconiino-V date the lingers Sas the flask is lifted.`

l claim as my invention :k

l. A niolding lasl section having side walls delining a inold space, a sand strip Coinprisino a plurality oit sections each hingedly mounted on said side Walls and svvingable on said hinges into and out of said space and having' co-acting cain surfaces, and operating n'ieans connected 'to certain of said sections.

2. itiniolding liash section having f side walls delininga mold space, a sectioned sand strip liingedly mounted on said sand walls and swingable on said hinges into and out of said space, means for biasing said sections into said space, inea-ns on two ot said sections for retracting said sections from said space and means on the other twl sections engaged by said lirut twosections for simultaneously i'etractingl the other twoV sections.

3. fi molding flash section having side walls delining a molding' space, said Walls being provided at their bottoni with an overhangin shirt, the bottoni edge of which projee beyond the bottom edge of the section, a sand strip hingedly mounted on said side walls and arranged Within said skirt and swingable on said hinges into and out of'said space. v

d. A molding flask section Vvhaving side' walls delining a mold space, li'lting handles on two ot said side walls, a sand strip hinged ly mounted on said side Walls and swingable on said hinges into and out of said space, bias# ing means roi' maintaining said stripV in said space and manipulating handles for said sand strip beneath the 'fing handles of the scction.

'5. A molding flask comprising a pair of sections, one oit said sections having inwardly pi.'oje '1tiiig sand supporting ears extending bcyoiul its inner ir'ace itor supporting a Vniold band and the other section having substantially vertical rib patterns on its inner face in alincinent with saidears.

6. A molding llasl section having side walls defining a mold space, a sand strip conn prising aA plurality ot sections arranged bel ncath one edge of said walls,'said sections having aars extending parallel with and pivotedv to the outer face ot' the side walls oi" the section v'and means operating said sections.

lin `witness whereof l, @iconen L, SMITH,

have hereunto set my hand at Richmond, ndiana, this 23rd dav oit May, A. D. one thousand nine hundred and twenty seven. n

' GEORG-l@ L. Sli/HTH.

for vsimultaneously- 

